Near the start of Episode 6, of Season 4 ("Orphaned"), we see a vintage car sitting in the rain.
(It looks like an early-1970's Chevrolet Super Sport to me - perhaps a 1972 Chevrolet Chevelle.)

Inside the car, Kate Argent wakes up in the back seat, and finds that someone has left her an
old cassette tape, with the words "Play Me" written on it.

She plays it, and a voice talks about the history of a family of werewolves (her own?),
and their need to achieve control via training and the use of the Triskelion.
the voice says that without control, extreme violence is inevitable.

This rainy scene was shot at on Woodley Avenue, where it passes Woodley Park -
which is in Van Nuys, in L.A.'s San Fernando Valley.

To be more precise, the car was sitting on the west side of Woodley Avenue,just a few yards south of the road that leads east to the Japanese Garden
(that garden has appeared in a number of productions, including Star Trek).

The address of the garden is 6100 Woodley Ave, Van Nuys, CA.

It's near (west of) the park's cricket fields where they filmed the lacrosse games.

They have filmed on this street before, including the scene where the
deer jumped through the windshield of Lydia's car.

And it was used again later in this same episode, for thescene where the Beserkers kill Garrett on the road.

There was actually no rain in L.A. on the day they filmed this scene,
and it was almost 80 degrees out . They used a rain tower to fake the
downpour (that's basically just a water sprinkler atop a very tall tripod).

In the screencap below, note the cluster of street signs circled in red (to the left),
and the low, white fence circled in red (to the right):